First custom earphone in the world with a single 14mm dynamic driver couples with advanced frequency suppression technology (FST).
Frequency Response: 10-20000 Hz
Impedance：16ohms（including cable）
Sensitivity (at 1kHz)：116dB spl (1mW)
Important: Due to the size of the driver, people with small ears may not be able to fit. We would need your ear impressions to check for sizes...